... are probably kinda obscure and were both relegated to C/W songs in their respective singles.
But anyway, for some reason I don't care for most of the ultra-famous Nana-chan pieces, and instead I love these two to bits.
Hime Murasaki :: Basilisk Alternate ED
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I seriously adore Hime Murasaki, I even downloaded the whole Basilisk just cause of it (not that I have watched it though... anyone knows if it's any good? >_>) I also really like the lyrics and that's one of the reasons why I got slightly interested in the anime; if I recall correctly Nana-chan wrote them by herself too.
Probably my most listened song of the past couple months, unfortunately for the ears of my family and neighbours since I always end up singing along it :D
Heart-shaped Chant :: Shining Wind OP
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Whoever thought of having Nana-chan sing the OP theme for this game, instead of Hoshi Soichirou that sung for the previous one and the anime, had a GREAT idea >_> (Hoshi's singing makes my ears bleed). Needless to say, I like this song a lot too, but at least I didn't buy the game cause of it! Even though I've always been tempted just cause I like Tony Taka's charadesign so much (hello Kureha model looking at me from the shelf)
There is no PV for any of these songs, but the live performances do them justice: Nana has really a great voice and I'm always surprised at how well she does live (and these songs aren't easy at all >_>) She really deserves to be the biggest seiyuu idol, Horie Yui doesn't even sound half as good as her :o